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Finding the Fourth Proportional to 74,649.10, 103,016.99 and 40,658.25

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Solution

The fourth proportional to 74,649.10, 103,016.99 and 40,658.25 is: 56,109.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,649.10 : 103,016.99 = 40,658.25 : x
  2. Step 2: Convert to fraction form
    74,649.10/103,016.99 = 40,658.25/x
  3. Step 3: Cross multiply
    74,649.10x = 103,016.99 × 40,658.25
  4. Step 4: Simplify right side
    74,649.10x = 4,188,490,776.46
  5. Step 5: Solve for x
    x = 4,188,490,776.46/74,649.10
  6. Step 6: Final answer
    x = 56,109.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.